ok any advice please, ive now welded some panels on, ive coated the insides of the repair panels, with epoxy, after degrease and sanding clean, then welded on, seemed ok, and when finished repair, ive grind down my welds and brushed poxy on the top right over metal, how do i prep this stuff, i would norm glass over the top, of this welded section the bodyfill then prime 2k and then paint,,????? never had issues, that way, so the poxy is new 2 me......any advice,,, ps,, want quaility job, not quick mot repair and underseal lol,,,,